What is maximum Ram memory that Windows XP can support?

[rohit007]

Hi i want to know how much memory can window xp support?

[Natalie]

How much memory XP can handle depends on whether it's 32-bit or 64-bit Windows XP. The 32-bit version (which I can guarantee is the one you have) can hold a maximum of 4GB and the 64-bit version can hold a maximum of 128GB of ram. How much memory your particular system can hold (up to the limits imposed by XP itself) is also determined by the motherboard in that system.

[Sam.D]

The RAM limit on 32-bit XP is 4GB total - including video.
XP x64 128 Gb
Vista x64 8 to 128+ Gb depending on Version
Microsoft Windows Server 2003 R2 Enterprise Edition - 128 MB of RAM minimum required; 256 MB or more recommended; 64 GB maximum for x86-based computers; 2 TB maximum for x64 and ia64 computers